Fabeiken



UNITED STATES PATENT marina.

EUGEN A. BAUMANN, OF FREIBURG, BADEN, ASSIGNOR TO THE FARBEN- FABRIKEN, VORMALS FRIEDR. BAYER & 00., OF ELBERFELD, GERMANY.

MEDICAL COMPOUND.

SPECIFICATION forming part of Letters Patent No. 391,875, dated October 30, 1888.

Application filed June 21, 1888. Serial No. 277.841. (Specimens) To all wltom it may concern.-

Be it known that I, Euenn A. BAUMANN,

professor of the University of Freiburg," doctor of philosophy, a subject of the Emperor of Germany, residing in the city of Freiburg, in Breisgau, in the Grand Duchy of Baden, Germany, have invented new and useful Improvements in the Production of a New Class of Products, of which the following is a specification.

My invention relates to the production of a new pharmaceutical product by adding oxygens to the product invented by me and called acetonznthylmereaptol. This new product is of very great value for use as a medicine in the class of soporific drugs.

In carrying out my invention practically I proceed as follows: Ten (10) kilos of acetonzethylmercaptol, gained by condensing one part of aceton and two parts of :ethylmercaptol with dry muriatic acid, as described by me, (Berichte der Deutseh Chem. Gesellschaft, Vol. XVIII, 1885, page 887,) are mixed with an aqueous solution of five per cent. of permanganate of potassium, while diluted sulphnric acid or acetic acid is slowly added to neutralize the hydroxide of potassium formed by the reaction. The oxidation is finished as soon as hypermanganate is no longer discharged after stirring. Now boil up, separate the solution of the so-formed new body from the peroxide of manganate by filtration, and evaporate off the water bath.

The new,,productcalled by me dizethylsulfondimethylmethan-crystallizes in large crystals and can be purified by reerystalliza tion. It forms large colorless prisms, difficultly soluble in cold but easily solublein hot water or alcohol. Ether, benzole, and chloroform dissolve it very easily.

The new body,having the following composition:

(3H, S0,0.,H,

\so,o,n,

melts at 125 to I26 centigrade; boils at 300 centigrade under decomposition, the distillate EUGEN A. BAUMANN.

Witnesses:

PAUL Knssirn, Professor of Surgery,

Germany.

ALFRED KAST, Professor of llledicine, University of Freiburg,

0f Breisgau, Gcrmmzy.

Miversity of Jrreibzug, 

